Successfully complete the indicated task to unlock the corresponding cheat under the "Cheats" option at the "Abstergo Challenges" menu. Note: Enabling a cheat will prevent trophies from being earned and the game from being saved.

Successfully complete the indicated task to unlock the corresponding costume:

Classic Assassin and Uplay costumes

Altair's Robes: Have a saved game file from Assassin's Creed, and an internet connection to retrive the costume. Alternately, have that game played on your Uplay profile.

Connor Kenway's outfit: Have a saved game file from Assassin's Creed 3, and an internet connection to retrive the costume. Alternately, have that game played on your Uplay profile.

Edward The Legend outfit: Purchase for 20 Uplay points.

Ezio Auditore's Robes: Have a saved game file from Assassin's Creed 2, Assassin's Creed: Brotherhood, or Assassin's Creed: Revelations, and an internet connection to retrive the costume. Alternately, have one of those games played on your Uplay profile.

Proceed through the main missions until you have access to Sequence 2: Memory 3. Proceed through Sequence 2: Memory 3 until you reach the area where the three templars are standing around a table. The "Pickpocket All Templars" optional objective will appear while standing next to them. Pickpocket all three templars, then pause the game and select the "Reload Last Checkpoint" option. The money you pickpocket from the templars will be saved, and you can pickpocket them again. Repeat this process as many times as desired to get an unlimited amount of money. You can get approximately 35,000 R every seven minutes using this glitch. You can use the money earned from this glitch to easily buy all weapons and gear in the game. Note: You can load any sequence and memory you have completed throughout the game, allowing you to use this trick at any point once you have access to the specified sequence and memory. Additionally, this glitch was done on an unpatched version of the game. After the patch has been applied, the glitch can still be used if done once you reach Sequence 2: Memory 3, but it cannot be done after completing the memory.

Easy money

Note: This trick requires a decent amount of hull armor and 10 or more mortar rounds for the Jackdaw ship. Travel to the legendary ship battle in the northeast corner of the map, with the two legendary ships that attack you. You will not be able to defeat both ships without your ship fully upgraded, but you will be able to defeat one if you complete the following steps. When the battle starts, shoot two mortar rounds at the ship you are focusing on while turning around, then release your fire barrels. When they get close, use your heavy shot. Do not get between the two opposing ships or you will quickly be defeated. Once they pass, keep shooting mortars at the ship you are trying to defeat while they are turning around. Repeat the previous steps until you destroy the ship you are focused on. Quickly pick up the loot from the destroyed legendary ship, or else the other ship will ram and sink you quickly. You will get 10,000 Reales and be able to keep it after you die. Repeat this process as many times as desired.

Note: This trick requires the cannon and/or shot upgrades; or upgrades to your chain shot and ram abilities. Also, the Brothers-In-Arms must not have been sunk yet. Start a battle with a group of ships, then sink one of them and ignore the other ships. Collect your loot, then intentionally fail. After respawning, the ship you sunk will also be back with its loot, and you will still have your previously collected loot. Repeat this process as many times as desired to earn 10,000 Reales each time.

Easy boarding

While facing large ships (for example, frigates), position your ship near your target, then swim to the ship, and eliminate the crew through close quarters. Afterwards, swim back to the Jackdaw, and hit each ship with a single broadside to immediately win the boarding sequence that follows.

Charge Ram attack

Defeat all four legendary ships to unlock the Charge Ram attack.

Revealing all collectible locations

To reveal the location of all collectibles (Animus Fragments, Chests, Secrets, and Song Sheets) in the game, synchronize all the viewpoints. Note: To get the West Indies Sea collectibles, you must conquer all Naval Forts.

All elite ship upgrade plan locations

Search the indicated locations at the listed coordinates on the world map to find all nine hidden elite ship upgrade plans in special chests and get the "Destroyer" trophy:

1. Elite Round Shot: Kabah Ruins - 769, 145 coordinates

2. Elite Hull: San Ignacio - 379, 770 coordinates

3. Elite Swivel Guns: Devil's Eye Cave - 488, 353 coordinates

4. Elite Harpoon: Andreas Island - 579, 720 coordinates

5. Elite Broadside Cannons: The Blue Hole - 471, 170 coordinates

6. Elite Heavy Shot: Petite Cavern - 901, 263 coordinates

7. Elite Fire Barrels: San Juan - 479, 487 coordinates

8. Elite Fire Barrel Storage: Isla Providencia - 502, 44 coordinates

9. Elite Ram: La Concepcion Shipwreck - 181, 296 coordinates

All Mayan Stela locations

Search the indicated locations at the listed coordinates on the world map to find all 16 Mayan Stela puzzles. The first puzzle is part of DNA Sequence 4: Memory 1 (it cannot be missed). After completing this memory, the other Mayan Stela puzzles will become available. Some of them are on islands in dangerous ocean zones; thus, it is recommended to upgrade your ship and continue through the story to make all locations accessible. You can also view the Mayan Stela locations on your map if you synchronize the viewpoints of their respective area. To check which ones you have found, open the progress tracker, and select the "Mayan Stela" tab. It provides an overview of islands that contain the secret puzzles. Once all 16 puzzles have been solved, travel to Tulum. There will be a marker on your map saying "Mayan Outfit". Go to that location in Tulum (70, 405 coordinates), and open the secret door to get the "Vault Raider" trophy, along with the special Mayan outfit. The following are the exact coordinates of each Mayan Stela puzzle:

1. Great Inagua: Acquired during DNA Sequence 4: Memory 1

2. Cat Island: 734, 694 coordinates

3. Matanzas: 343, 642 coordinates

4. Cape Bonavista: 179, 593 coordinates

5. Tulum: 70, 405 coordinates

6. Pinos Isle: 334, 476 coordinates

7. Pinos Isle: 342, 478 coordinates

8. Tortuga: 876, 377 coordinates

9. Long Bay: 525, 253 coordinates

10. Isla Providencia: 502, 44 coordinates

11. Isla Providencia: 502, 44 coordinates

12. New Bone: 431, 116 coordinates

13. Misteriosa: 303, 199 coordinates

14. Misteriosa: 296, 196 coordinates

15. Santanillas: 217, 245 coordinates

16. Santanillas: 221, 242 coordinates

All tavern locations

Search the indicated locations at the listed coordinates on the world map to find all eight taverns and get the "Barfly" trophy. Simply walk up to the barkeeper at each tavern, watch a short cutscene, and defeat the bandits to unlock the tavern. You can see the taverns on the world map if you synchronize the viewpoints for the respective area.

1. Andreas Island (573, 720 coordinates)

2. Salt Key Bank (496, 629 coordinates)

3. Crooked Island (808, 545 coordinates)

4. Arroyos (192, 565 coordinates)

5. Corozal (37, 266 coordinates)

6. Grand Cayman (392, 325 coordinates)

7. Kingston (623, 172 coordinates)

8. Ile à Vache (839, 137 coordinates)

All Underwater Shipwreck locations

Search the indicated locations at the listed coordinates on the world map to find all 13 hidden shipwrecks and get the "Seven Deadly Seas" trophy. Note: Shipwrecks become available after completing Sequence 6: Memory 1.

Swim inside the Antocha shipwreck at the 630, 660 coordinates. While looking out one of the windows, you should be able to see a giant squid take down a whale.

The IT Crowd reference

Go to the map near the entrance to the modern-day Abstergo offices. Two co-workers will begin talking about Chicago. They will talk about John from IT. The male co-worker will comment that whenever he requests help, John replies with "Have you tried turning it off and on again?", which is a reference to the British comedy The IT Crowd.

Easy "Excavator" trophy

To find a buried treasure, you must first obtain a treasure map. A treasure map can easily be found on Mariguana Island, at the coordinates 878, 539. Collect the map, and you will be shown a picture and the coordinates of a treasure. This particular treasure can be found on Andreas Island, at the coordinates 575, 717. To unlock the locations of other treasure maps, you can talk to the barkeepers of taverns, or just explore the world and synchronize viewpoints.

Easy "Hungover" trophy

To get the "Hungover" trophy, keep drinking at a tavern until you pass out. A tavern can be found in Nassau, which is one of the first locations you will visit during the main story. Walk up to the bar, and interact with the bottle to start drinking. You have to drink at least five times to pass out.

Easy "Killer Killer" trophy

Killer whales can be found in the "Cruz" area of the ocean. Capture the fort of this area to see the killer whale symbol on your map. It is also recommended to upgrade the harpooning statistic of your ship by upgrading the harpoon strength and harpoon storage. Check your map for the fishing locations (one can be found at coordinates 537, 340 on the world map), as they can vary. Fishing locations are highlighted on the ocean when you get close. Interact with one of these spots to start fishing. After a deck hand announces the presence of a whale, Kenway will be sent with a harpoon to hunt it. Once the killer whale appears, defend your boat and keep throwing harpoons at the whale until it dies to get the "Killer Killer" trophy.

Easy "Owned" trophy

A great place to easily complete every activity in a single location is on "Florida" island, at coordinates 409, 815. When you scroll over an island on the world map, you can see which activities it has to offer. Usually it offers some collectibles and viewpoints. Florida island has very few activities to complete. Synchronize the viewpoint, collect the two animus fragments, open the treasure chest, and pick up the bottle message to get the "Owned" trophy.

Easy "Redingote Up!" trophy

Crafting the Hunter outfit will cost a total of 11,000 R. Go to any general store, and select the "Hunting Goods" tab. Purchase the Red Howler Monkey Skin for 5,000 R and White Jaguar Pelt for 6,000 R. Then, open the crafting menu, scroll to the very bottom, and choose the "Hunting Outfit" option to craft this outfit and get the "Redingote Up!" trophy. Note: If you do not want to waste the money crafting the Hunter outfit but still want the trophy, simply save the game and back it up to a storage device (for example, USB flash drive) before crafting the Hunter outfit. After crafting it and getting the trophy, copy the saved game file back to the original storage device, and overwrite the current saved game file to retain the money you spent crafting the Hunter outfit.

Easy "Silence, Fool!" trophy

You can get the "Silence, Fool!" trophy at any warehouse. Warehouses are found at farms and have a restricted area around them (shown as red on the world map). They will be marked on your map if you synchronize viewpoints. One can be found in Nassau, at coordinates 633, 784. Once you enter the restricted area, there will be an alarm bell on your HUD. Then, get noticed by an enemy, and wait for him to ring the bell. Quickly kill him with a melee attack when he starts ringing the bell to unlock the trophy. Note: You can also do this at warehouses that have already been looted. The enemies will respawn after a while.

Easy "Siren Song" trophy

To rescue pirate hostages by distracting enemies with dancers, you must allow some of your crew members to die. Board an enemy ship, and your crew should begin fighting. Many of your crew will probably die. Then, go to Kingston, and go to coordinates 623, 172. There is a restricted area where two enemies are aiming at captured pirates. You can hire some dancers nearby, just up the street. Send the dancers to these two enemies. Once they are distracted, sneak behind them, and free the pirates to get the "Siren Song" trophy. If this event does not appear (even after losing a lot of your own crew members), fast travel to another island, and return later.

Easy "Wild West Indies" trophy

First, craft all pistol holsters. You can buy the required crafting items from any general store (so you do not have to hunt down the animals on your own), if needed. Also, buy and equip the "Cannon-Barrel Pistol" for one-shot kills. Then, find a group of at least four enemies, walk up to them with the pistols selected in your weapon wheel, and press Triangle without manually aiming to have each shot kill an enemy and get the "Wild West Indies" trophy.